Improvement in sewing-machines



UNITED STATES PATENT OFFICE.

I. M. ROSE, OF NE\V YORK, ASSIGNOR TO J N O. R. MORRELL, OF BROOKLYN, N. Y.

IMPROVEMENT IN SEWING-MACHINES.

Specification forming part of Lettcrs Patent No. 28,814, dated June 19, 1860.

To all whom it may concern Be it known that I, ISRAEL M. RosE, of the city and State of New York, have invented, made, and applied to use a certain new and useful Improvement in Sewing-lvlachines for Button-Holes, &c.; and I do hereby declare that the following is a full, clear, and exact description of the construction and operation of the same, reference being had to the annexed drawings, making part of this specification, wherein- Figure 1 is a side "iew of my improved machine. Fig. 2 is an end elevation, and Fig. 3 represents the manner of forming the stitch.

Similar marks of reference denote the same parts.

The nature of my said invention consists in the combination of a revolving hook, bobbin, and reciprocating needle with an eyepointed needle that perforates the cloth in such a manner that the under thread is interlaced or concatenated with needle-thread at the surface of the goods, and the loop of the needle-thread being passed around the bobbin of second thread prevents the loop of needle-thread drawing up through the cloth, so that I perform the operation of working a but ton-hole by the combined shuttle and double loop stitch, or in any similar operation to that of making a button-hole maybe performed in my said machine.

In the drawings, a is the base of my machine. b is the fixed arm, and c is the table. (I is a fly-wheel, by which the gears c and f and g are revolved. The gear f is on the shaft 71, that communicates a reciprocating motion to the needle-bar and needle 1, and the gear 9 is 011 the shaft k, that gives motion to the revolving hook and lower needle. These parts thus far may be of any desired or usual character.

The hook Z is revolved by pins 1 1 on a disk, m, at the end of the shaft k, and said pins are pressed back to pass the loop of needle-thread by springs and forward to take the shuttle by coming against the incline 2. The hook I is made to travel in a circular raceway, a,

and carries a bobbin, 3, of shuttle or lower thread, and to the said revolving hook Zthe lower needle, 0, is attached by a pin eccentric to said hook, so that this needle 0 is proiected above and retracted below the bed 0, and also has an oscillating motion as it moves through an opening in the bed 0. This needle 0 in making button-holes passes up through the slit cut in the cloth; but if said slit is not made the said needle may perforate the cloth, the operation being the same in both cases.

The concatenation of the stitch is as follows: The movement of the parts being properly timed and proportioned, the needle 0 rises through the cloth, carrying with it the second thread that passes through an eye near its point. In rising the needle 0 oscillates past the needle i, which, descending to perforate the cloth, takes a loop of second thread. The eyepointed needle 2' passes through the cloth, and the revolving hook Z takes a loop of needle thread, and in revolving with the needle 0 connected thereto, passes said needle 0 and the entire bobbin and hook through said loop of needle-thread, which consequently draws off around the second thread as the stitches tighten, thus forming a shnttlestitch 011 the under side of the cloth and a double-looped stitch on the upper side, for the loop of under thread interlocks with the loop of the upper thread and tightens with the same near the edge of the button-hole, as represented in Fig. 3, wherein the upper thread is shown in red lines and the lower thread in blue.

The means for regulating tension and taking up the slack thread may be of any desired character, and the curvature given to the lower needle, 0, must depend upon the extent of motion and the position in which it rises through the bed; and it becomes necessary that an opening or slit be provided, as seen in Fig. 4, between the perforations for the respective needles, in order that the loop of needlethread may easily draw off the second or or lower needle.

Having thus described my said invention, what I claim, and desire to secure by Letters Patent, is

The revolving hook Z, carrying the bobbin 3 and lower needle, 0, in combination with the perforating eye-pointed needle i, substantially as specified, whereby the threads are concatenated, as set forth.

In witness whereof I have hereunto set my signature this 18th day of April, 1860.

I. M. ROSE.

\Vitnesses:

LEMUEL W. SEEEELL, CHAS. H. SMITH. 

